[ 
https://issues.apache.org/jira/browse/AVRO-1401?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

dennis lucero updated AVRO-1401:
--------------------------------

    Description: 
@Nullable does not seem to be compatible with byte[] (Avro type bytes)

{code:java}
public static void main(String[] args) throws IOException
{
    Schema schema = ReflectData.get().getSchema(MyRecord.class);
    DatumWriter<?> protocol = ReflectData.get().createDatumWriter(schema);
    DataFileWriter<MyRecord> writer = new 
DataFileWriter(protocol).create(schema, System.out);
    writer.append(new MyRecord());
    writer.close();
}

public static class MyRecord {
    @Nullable
    byte[] bytes = "foo".getBytes();
}
{code}

{code}
org.apache.avro.UnresolvedUnionException: Not in union 
["null",{"type":"bytes","java-class":"[B"}]: [B@6d3f1f92
        at 
org.apache.avro.generic.GenericData.resolveUnion(GenericData.java:600)
        at 
org.apache.avro.generic.GenericDatumWriter.resolveUnion(GenericDatumWriter.java:151)
        at 
org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:71)
        at 
org.apache.avro.reflect.ReflectDatumWriter.write(ReflectDatumWriter.java:143)
        at 
org.apache.avro.generic.GenericDatumWriter.writeField(GenericDatumWriter.java:114)
        at 
org.apache.avro.reflect.ReflectDatumWriter.writeField(ReflectDatumWriter.java:175)
        at 
org.apache.avro.generic.GenericDatumWriter.writeRecord(GenericDatumWriter.java:104)
        at 
org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:66)
        at 
org.apache.avro.reflect.ReflectDatumWriter.write(ReflectDatumWriter.java:143)
        at 
org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:58)
        at org.apache.avro.file.DataFileWriter.append(DataFileWriter.java:257)
{code}

  was:
@Nullable does not seem to be compatible with byte[] (Avro type bytes)

{code:java}
public static void main(String[] args) throws IOException
{
    Schema schema = ReflectData.get().getSchema(MyRecord.class);
    DatumWriter<?> protocol = ReflectData.get().createDatumWriter(schema);
    DataFileWriter<MyRecord> writer = new 
DataFileWriter(protocol).create(schema, System.out);
    writer.append(new MyRecord());
    writer.close();
}

public static class MyRecord {
    @Nullable
    byte[] bytes = "foo".getBytes();
}
{code}
org.apache.avro.UnresolvedUnionException: Not in union 
["null",{"type":"bytes","java-class":"[B"}]: [B@6d3f1f92
        at 
org.apache.avro.generic.GenericData.resolveUnion(GenericData.java:600)
        at 
org.apache.avro.generic.GenericDatumWriter.resolveUnion(GenericDatumWriter.java:151)
        at 
org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:71)
        at 
org.apache.avro.reflect.ReflectDatumWriter.write(ReflectDatumWriter.java:143)
        at 
org.apache.avro.generic.GenericDatumWriter.writeField(GenericDatumWriter.java:114)
        at 
org.apache.avro.reflect.ReflectDatumWriter.writeField(ReflectDatumWriter.java:175)
        at 
org.apache.avro.generic.GenericDatumWriter.writeRecord(GenericDatumWriter.java:104)
        at 
org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:66)
        at 
org.apache.avro.reflect.ReflectDatumWriter.write(ReflectDatumWriter.java:143)
        at 
org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:58)
        at org.apache.avro.file.DataFileWriter.append(DataFileWriter.java:257)
{code]


> @Nullable does not work with byte[]
> -----------------------------------
>
>                 Key: AVRO-1401
>                 URL: https://issues.apache.org/jira/browse/AVRO-1401
>             Project: Avro
>          Issue Type: Bug
>          Components: java
>    Affects Versions: 1.7.5
>            Reporter: dennis lucero
>              Labels: java, reflection, union
>
> @Nullable does not seem to be compatible with byte[] (Avro type bytes)
> {code:java}
> public static void main(String[] args) throws IOException
> {
>     Schema schema = ReflectData.get().getSchema(MyRecord.class);
>     DatumWriter<?> protocol = ReflectData.get().createDatumWriter(schema);
>     DataFileWriter<MyRecord> writer = new 
> DataFileWriter(protocol).create(schema, System.out);
>     writer.append(new MyRecord());
>     writer.close();
> }
> public static class MyRecord {
>     @Nullable
>     byte[] bytes = "foo".getBytes();
> }
> {code}
> {code}
> org.apache.avro.UnresolvedUnionException: Not in union 
> ["null",{"type":"bytes","java-class":"[B"}]: [B@6d3f1f92
>       at 
> org.apache.avro.generic.GenericData.resolveUnion(GenericData.java:600)
>       at 
> org.apache.avro.generic.GenericDatumWriter.resolveUnion(GenericDatumWriter.java:151)
>       at 
> org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:71)
>       at 
> org.apache.avro.reflect.ReflectDatumWriter.write(ReflectDatumWriter.java:143)
>       at 
> org.apache.avro.generic.GenericDatumWriter.writeField(GenericDatumWriter.java:114)
>       at 
> org.apache.avro.reflect.ReflectDatumWriter.writeField(ReflectDatumWriter.java:175)
>       at 
> org.apache.avro.generic.GenericDatumWriter.writeRecord(GenericDatumWriter.java:104)
>       at 
> org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:66)
>       at 
> org.apache.avro.reflect.ReflectDatumWriter.write(ReflectDatumWriter.java:143)
>       at 
> org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:58)
>       at org.apache.avro.file.DataFileWriter.append(DataFileWriter.java:257)
> {code}



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